[multiple changes]

2001-07-27  Daniel Berlin  <dan@cgsoftware.com>

	* regclass.c (reg_scan_mark_refs): Increment REG_N_REFS when we
	increment REG_N_SETS.

2001-07-26  Daniel Berlin  <dan@cgsoftware.com>

	* sbitmap.h: New prototype for sbitmap_a_xor_b.

	* sbitmap.c (sbitmap_a_xor_b): New function.
	#ifdef the basic block stuff on the define IN_GCC.

From-SVN: r44460

gcc/ChangeLog

+2001-07-27  Daniel Berlin  <dan@cgsoftware.com>
+
+	* regclass.c (reg_scan_mark_refs): Increment REG_N_REFS when we
+	increment REG_N_SETS.
+
+2001-07-26  Daniel Berlin  <dan@cgsoftware.com>
+
+	* sbitmap.h: New prototype for sbitmap_a_xor_b.
+
+	* sbitmap.c (sbitmap_a_xor_b): New function.
+	ifdef the basic block stuff on IN_GCC.
+
 2001-07-29  Neil Booth  <neil@cat.daikokuya.demon.co.uk>
 
 	* cppexp.c (parse_defined): Always record the macro name.

gcc/regclass.c

@@ -2427,7 +2427,10 @@ reg_scan_mark_refs (x, insn, note_flag, min_regno)
 
       if (GET_CODE (dest) == REG
 	  && REGNO (dest) >= min_regno)
-	REG_N_SETS (REGNO (dest))++;
+	{
+	  REG_N_SETS (REGNO (dest))++;
+	  REG_N_REFS (REGNO (dest))++;
+	}
 
       /* If this is setting a pseudo from another pseudo or the sum of a
 	 pseudo and a constant integer and the other pseudo is known to be

gcc/sbitmap.c

@@ -99,6 +99,13 @@ sbitmap_copy (dst, src)
   memcpy (dst->elms, src->elms, sizeof (SBITMAP_ELT_TYPE) * dst->size);
 }
 
+/* Determine if a == b. */
+int
+sbitmap_equal (a, b)
+     sbitmap a, b;
+{
+  return !memcmp (a->elms, b->elms, sizeof (SBITMAP_ELT_TYPE) * a->size);
+}
 /* Zero all elements in a bitmap.  */
 
 void
@@ -230,6 +237,31 @@ sbitmap_a_and_b (dst, a, b)
   return changed;
 }
 
+/* Set DST to be (A xor B)).
+   Return non-zero if any change is made. */
+
+int
+sbitmap_a_xor_b (dst, a, b)
+     sbitmap dst, a, b;
+{
+  unsigned int i;
+  sbitmap_ptr dstp, ap, bp;
+  int changed = 0;
+  
+  for (dstp = dst->elms, ap = a->elms, bp = b->elms, i = 0; i < dst->size;
+       i++, dstp++)
+    {
+      SBITMAP_ELT_TYPE tmp = *ap++ ^ *bp++;
+      
+      if (*dstp != tmp)
+	{
+	  changed = 1;
+	  *dstp = tmp;
+	}
+    }
+  return changed;
+}
+
 /* Set DST to be (A or B)).
    Return non-zero if any change is made.  */
 
@@ -324,6 +356,7 @@ sbitmap_a_and_b_or_c (dst, a, b, c)
   return changed;
 }
 
+#ifdef IN_GCC
 /* Set the bitmap DST to the intersection of SRC of successors of
    block number BB, using the new flow graph structures.  */
 
@@ -483,6 +516,7 @@ sbitmap_union_of_preds (dst, src, bb)
 	  *r++ |= *p++;
       }
 }
+#endif
 
 /* Return number of first bit set in the bitmap, -1 if none.  */
 

gcc/sbitmap.h

@@ -97,6 +97,7 @@ extern void dump_sbitmap_vector 	PARAMS ((FILE *, const char *,
 extern sbitmap sbitmap_alloc		PARAMS ((unsigned int));
 extern sbitmap *sbitmap_vector_alloc	PARAMS ((unsigned int, unsigned int));
 extern void sbitmap_copy 		PARAMS ((sbitmap, sbitmap));
+extern int sbitmap_equal                PARAMS ((sbitmap, sbitmap));
 extern void sbitmap_zero		PARAMS ((sbitmap));
 extern void sbitmap_ones		PARAMS ((sbitmap));
 extern void sbitmap_vector_zero		PARAMS ((sbitmap *, unsigned int));
@@ -112,6 +113,7 @@ extern int sbitmap_a_and_b_or_c		PARAMS ((sbitmap, sbitmap, sbitmap,
 						 sbitmap));
 extern int sbitmap_a_and_b		PARAMS ((sbitmap, sbitmap, sbitmap));
 extern int sbitmap_a_or_b		PARAMS ((sbitmap, sbitmap, sbitmap));
+extern int sbitmap_a_xor_b              PARAMS ((sbitmap, sbitmap, sbitmap));
 extern int sbitmap_a_subset_b_p		PARAMS ((sbitmap, sbitmap));
 
 extern int sbitmap_first_set_bit	PARAMS ((sbitmap));